package com.ufgov.ip.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5 {

	private final static String[] strDigits = { "0", "1", "2", "3", "4", "5",
        "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };

	public MD5() {
	}
	
	private static String byteToArrayString(byte bByte) {
	    int iRet = bByte;
	    if (iRet < 0) {
	        iRet += 256;
	    }
	    int iD1 = iRet / 16;
	    int iD2 = iRet % 16;
	    return strDigits[iD1] + strDigits[iD2];
	}
	
	private static String byteToNum(byte bByte) {
	    int iRet = bByte;
	    System.out.println("iRet1=" + iRet);
	    if (iRet < 0) {
	        iRet += 256;
	    }
	    return String.valueOf(iRet);
	}
	
	private static String byteToString(byte[] bByte) {
	    StringBuffer sBuffer = new StringBuffer();
	    for (int i = 0; i < bByte.length; i++) {
	        sBuffer.append(byteToArrayString(bByte[i]));
	    }
	    return sBuffer.toString();
	}
	
	public String GetMD5Code(String strObj) {
	    String resultString = null;
	    try {
	        resultString = new String(strObj);
	        MessageDigest md = MessageDigest.getInstance("MD5");
	        resultString = byteToString(md.digest(strObj.getBytes()));
	    } catch (NoSuchAlgorithmException ex) {
	        ex.printStackTrace();
	    }
	    return resultString;
	}
	
	public static void main(String[] args) {
	    MD5 getMD5 = new MD5();
	    System.out.println(getMD5.GetMD5Code("superman_e304"));
	}

}
